From 333a820416ccb0e24974b6ebe7d447c0c28c7b76 Mon Sep 17 00:00:00 2001 From: Paulo Zanoni Date: Tue, 6 Aug 2013 18:57:16 -0300 Subject: [PATCH] drm/i915: don't disable/reenable IVB error interrupts when not needed If the error interrupts are already disabled, don't disable and reenable them. This is going to be needed when we're in PC8+, where all the interrupts are disabled so we won't risk re-enabling DE_ERR_INT_IVB. v2: Use dev_priv->irq_mask (Chris) Signed-off-by: Paulo Zanoni Reviewed-by: Rodrigo Vivi Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/i915_irq.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c index 8872e1955c45..976113af1859 100644 --- a/drivers/gpu/drm/i915/i915_irq.c +++ b/drivers/gpu/drm/i915/i915_irq.c @@ -1373,6 +1373,7 @@ static irqreturn_t ironlake_irq_handler(int irq, void *arg) drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; u32 de_iir, gt_iir, de_ier, sde_ier = 0; irqreturn_t ret = IRQ_NONE; + bool err_int_reenable = false; atomic_inc(&dev_priv->irq_received); @@ -1401,7 +1402,9 @@ static irqreturn_t ironlake_irq_handler(int irq, void *arg) * handler. */ if (IS_HASWELL(dev)) { spin_lock(&dev_priv->irq_lock); - ironlake_disable_display_irq(dev_priv, DE_ERR_INT_IVB); + err_int_reenable = ~dev_priv->irq_mask & DE_ERR_INT_IVB; + if (err_int_reenable) + ironlake_disable_display_irq(dev_priv, DE_ERR_INT_IVB); spin_unlock(&dev_priv->irq_lock); } @@ -1437,7 +1440,7 @@ static irqreturn_t ironlake_irq_handler(int irq, void *arg) } } - if (IS_HASWELL(dev)) { + if (err_int_reenable) { spin_lock(&dev_priv->irq_lock); if (ivb_can_enable_err_int(dev)) ironlake_enable_display_irq(dev_priv, DE_ERR_INT_IVB); -- 2.30.2